Stm32f407 Filter configuration for CAN

[Ash1]

HI

Can you tell me how to configure filter to accept only ID 202 to 205 .

CAN_FilterTypeDef sFilterConfig;

/* USER CODE BEGIN CAN1_Init 2 */
sFilterConfig.FilterBank = 0;
sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK;
sFilterConfig.FilterScale = CAN_FILTERSCALE_32BIT;
sFilterConfig.FilterIdHigh = 0x0000;
sFilterConfig.FilterIdLow = 0x0000;
sFilterConfig.FilterMaskIdHigh =0x0000;
sFilterConfig.FilterMaskIdLow = 0x0000;
sFilterConfig.FilterFIFOAssignment = CAN_RX_FIFO0;
sFilterConfig.FilterActivation = ENABLE;
sFilterConfig.SlaveStartFilterBank = 14;
if (HAL_CAN_ConfigFilter(&hcan1, &sFilterConfig) != HAL_OK)
{
 Error_Handler();
}

note:

What value should come ?

all I have configure as standard ID only

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Edited to apply source code formatting - please see How to insert source code for future reference.

[mƎALLEm]

Hello,

Try this filter configuration:

 sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK;
 sFilterConfig.FilterScale = CAN_FILTERSCALE_16BIT;
 sFilterConfig.FilterIdHigh = 0x0204<<5;
 sFilterConfig.FilterIdLow = 0x0202<<5;
 sFilterConfig.FilterMaskIdHigh = 0xFFE<<5;
 sFilterConfig.FilterMaskIdLow = 0xFFE<<5;

Hope that helps.

[Ash1]

HI

Note: Can you suggest me with this configuration when filter scale is 32 bit " CAN_FILTERSCALE_32BIT"

I want my filter to accept CANID from 202 to 205

 

[mƎALLEm]

What kind of ID frame are you using in your application Extended or Standard?